Report on invasive plant species in NiueCecropia obtusifolia and C. peltata are invasive tree species that are a problem in Hawai‘i and French Polynesia, respectively. Cecropiaobtusifolia is also ... Pacific Pestnet list servers. Take special measures to keep Castilla elastica, Cecropiaobtusifolia/peltata, Cinnamomum verum, Chromolaena odorata, Clerodendrum quadriloculare, Clidemia hirta, Coccinia grandis, ... hear.orgMore from this site